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tr.v. sus·tained, sus·tain·ing, sus·tains
a. To keep in existence; maintain, continue, or prolong: sustain an effort.
b. To keep up (a joke or assumed role, for example) competently.
a. To supply with necessities or nourishment; provide for: the income needed to sustain a family.
b. To support the spirits, vitality, or resolution of; encourage: We were sustained by her unflagging optimism.
3. To support from below; keep from falling or sinking; prop: The beams sustain the weight of the roof.
a. To bear up under; withstand: can't sustain the blistering heat.
b. To experience or suffer: sustained minor injuries.
5. To affirm the validity of: The judge has sustained the prosecutor's objection.
A capacity of a musical instrument to continue the resounding of a note or tone.

[Middle English sustenen, from Old French sustenir, from Latin sustinēre : sub-, from below; see sub- + tenēre, to hold; see ten- in Indo-European roots.]

sus·tain′er n.
sus·tain′ment n.


(Astronautics) a rocket engine that maintains the velocity of a space vehicle after the booster has been jettisoned
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sustainer - someone who upholds or maintainssustainer - someone who upholds or maintains; "firm upholders of tradition"; "they are sustainers of the idea of democracy"
admirer, booster, protagonist, supporter, champion, friend - a person who backs a politician or a team etc.; "all their supporters came out for the game"; "they are friends of the library"
moteur de croisière
References in periodicals archive ?
For more information about sustainer giving, please see the enclosed envelope or contact Tara Edwards: 202.347.1140 or
Larry Brueggeman was listed under the Sustainer $100-$249 category of 2000-2001 FOUNDATION contributors in the October/November issue of AMT.
Its normal range is 5000 metres, but this can be boosted to more than 7000 metres by adding a sustainer motor.
Tenders are invited for booster and sustainer motor assembly with nozzles
Many years of sustained combat operations have proven that teamwork and collaboration remain the bedrock of a sustainer's ability to enable operational success on the battlefield.
Recipients also were hit up for a donation, though the ask varied based on previous behavior: If a recipient had not renewed, they would get a renewal ask; if they did renew, they would get a sustainer ask; and, if they were not a member, they were asked to join.
It is a position based on faith in a creator sustainer God.
Now referred to as sustainer programs, they are an integral part of any smart fundraising strategy.
So your organization has a monthly sustainer program.
Does any senior Army sustainer have or need the authority to make a revolutionary decision?
ALA has also recognized Capital One for its financial support by naming the company as a Library Champion at the $25,000 (Sustainer) level.